Such examples suggest that even if the Y chromosome disappears—which may take millions of years—human biology could evolve ...

Scientific debates can be as passionate and high-profile as political ones. Learn about an epic battle waged between the Castle and Morgan laboratories over the organization of genes. Sturtevant's ...

Yet, there are many examples of macroevolutionary phenomena found in the order Primates, including stasis, adaptive radiations, extinctions of entire lineages, co-evolution, and convergent evolution.